Piston Service Kit with Low Friction Seals for Parker HMI & HMD Series Tie Rod Cylinders

Example Models:

PF025HM001
PF032HM001
PF040HM001
PF050HM001
PF063HM001

Piston Service Kit with Low Friction Seals for Parker HMI & HMD Series Tie Rod Cylinders

Product Overview

This genuine OEM piston service kit fitted with Parker low-friction sealing elements is purpose-built for full overhaul maintenance of HMI and HMD medium-to-heavy duty tie rod hydraulic cylinders. Different from standard NBR seal kits focused on general cost efficiency, this low-friction variant adopts composite PTFE-integrated seal structures, targeting applications requiring smooth reciprocation, minimal heat generation, precise positioning and reduced energy consumption. It restores the cylinder’s original low-leakage performance while cutting sliding friction loss during piston movement, perfectly matching the structural piston groove dimensions of HMI and HMD tie rod cylinders for direct drop-in OEM replacement.

HMI and HMD series are Parker’s mainstream tie rod cylinder lines widely used in automated manufacturing, precision machining and material handling. The low-friction piston service kit serves as a mid-to-high tier maintenance solution for precision motion scenarios where conventional single-layer rubber seals cause stick-slip, friction heat or positioning deviation.

Q: What’s the MOQ of customized tie-rod cylinder?

A: Depends on the style of tie-rod. We would like to cast and forge once the quantity above 100 pcs.

Q:What’s the lead time of customized tie-rod cylinder?

A: Well, it depends on the quantity and style of hydrualic cylinders, at least 60 days if we make casting and forging, at least 35 days by maching.

Q: Are you the manufacturer of hydrualic cylinder?

A: Sure, we are the manufacutuer and trading of hydraulic cylinder.

Q: What is the difference between double acting and single acting cylinders?own controlled by the pump or the valve or is it only one speed?

A: Double-Acting-have a port at each end, supplied with hydraulic fluid for both the retraction and extension. Single-Acting-hydraulic fluid enters through

a port at one end of the cylinder, which extends the rod by means of area difference. An external force or gravity returns the piston rod.

Q: I have a drawing, could you customized cylinder as my drawing?

A: Sure. Show us the drawing, we will quote for you soonest.

Q: Could you make the cylinder which is not on the above data sheet?

A: Yes, we make and supply a wide rang of hydrualic cylinders as a proffetional manufacture, there are only some kinds of them show on the website. Freely contact us to get more information.

1. Eliminate Stick-Slip for Precision Motion

Low-friction composite seals maintain steady sliding force at ultra-low piston speeds, avoiding jerky movement and positioning errors in precision automation, CNC clamping and synchronous lifting equipment.

2. Reduce System Energy Consumption

Lower sliding friction reduces hydraulic load loss, decreasing power draw from hydraulic power units and supporting energy-saving production line operation.

3. Suppress Heat Buildup & Extend Seal Lifespan

Friction heat is drastically reduced during high-cycle continuous operation, slowing elastomer aging, permanent compression set and seal hardening to extend maintenance intervals.

4. Stable Low Internal Cross-Chamber Leakage

Precision molded bidirectional sealing lips maintain consistent fluid blocking performance under variable pressure, ensuring stable cylinder thrust and repeatable positioning accuracy.

5. Optimized Side Load Adaptability

Matched low-friction PTFE wear rings evenly distribute radial side loads common in tie rod cylinder installations, preventing uneven seal lip wear and early failure.

All components are size-matched to the unique internal piston groove profiles of HMI/HMD tie rod cylinders:

Bidirectional low-friction composite piston seals (core PTFE sliding surface + HNBR elastomer backing)
Low-drag filled PTFE fabric wear guide rings, engineered to reduce radial friction between piston and honed cylinder tube
Lightweight PEEK anti-extrusion backup rings to prevent seal edge deformation under pressure fluctuations
Low-friction HNBR static O-rings for auxiliary piston end sealing
Special low-viscosity assembly lubricant compatible with PTFE composite seals
Official Parker operation manual covering disassembly, seal installation and torque standards for HMI/HMD tie rod cylinders

Every component adheres to Parker internal design specifications and ISO 3601 / ISO 27542 sealing dimensional standards, requiring no machining modification during on-site replacement.